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Multimedia Software Engineering, 1998. Proceedings. International Workshop on

Date 20-21 April 1998

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Displaying Results 1 - 17 of 17
  • Proceedings International Workshop on Multimedia Software Engineering (Cat. No.98EX222)

    Publication Year: 1998
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    Freely Available from IEEE
  • Author index

    Publication Year: 1998 , Page(s): 119
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    Freely Available from IEEE
  • Specification of a query language for multimedia database systems

    Publication Year: 1998 , Page(s): 111 - 118
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    We propose an abstract multimedia query calculus that is built upon a set of generalized n-ary spatio-temporal relations and the object-oriented modeling paradigm for multimedia data. The proposed calculus allows the declaration of multimedia data, specification of spatio-temporal logic, formulation of spatio-temporal queries for content-based retrieval of image/video data, and composition/retrieval of multimedia documents View full abstract»

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  • A situation-sensitive interface for the management of personal documents

    Publication Year: 1998 , Page(s): 96 - 103
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    While multimedia/multimodal interfaces allow people to interact with computers more easily, due to an explosion of the information to be managed, an additional facility for assisting people in managing the information is needed. A new approach of personal information management based on the situation is presented. This study was motivated by the fact that (mobile) computers are operated under many different situations, including the time when an event occurs, the location where we are, and actions which were performed in the past. User's actions are dependent on situations. In our trial, information is presented to the user selectively in accordance with the current situation. Here the system monitors user's events and establishes relationships between the information and situations at runtime. A prototype system which has been implemented for demonstrating the effectiveness of the idea in file management, is also explained View full abstract»

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  • A framework for assessing and comparing multimedia and hypermedia authoring methodologies

    Publication Year: 1998 , Page(s): 68 - 75
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    Data perception importance by users has demanded data models oriented to individuals, whose emphasis is information description at high levels of abstraction. Model-based approaches to hypermedia design are authoring methodologies that make use of the newest data models in order to begin from high level abstractions a step-by-step process directed to low level specifications trying to cope with multimedia and hypermedia. A development approach of multimedia and hypermedia oriented data models is proposed, named the hook approach, that basically establishes the need for facilitator mechanisms to allow mappings between data models of different abstraction levels. In order to point out the broadness of authoring methodologies and even to allow their comparison an Abstract Categorization Map is also proposed. This map can be used to present data model adherence to the hook approach and also can be used as a reference framework for data models oriented to support multimedia and hypermedia View full abstract»

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  • Performance evaluation of media losses in the Continuous Media Toolkit

    Publication Year: 1998 , Page(s): 60 - 67
    Cited by:  Papers (1)
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    We show a methodology for a user-driven, top down approach to research in quality of service issues in multimedia systems. As a case study, we show the development of metrics, validation by means of a user study, and a performance evaluation of a prototyping environment. The Berkeley Continuous Media Toolkit (CMT) is a popular environment that satisfies this need. From a user's perspective, in order for multimedia demonstrations to be comprehensible, the number of audio or video frames dropped and the timing delays in the ones that are displayed, need to be kept to a minimum. Therefore, it is important to know the frame dropping characteristics of CMT. In a series of experiments we monitored the variation of these parameters with respect to processor and network loads. It was observed that loads affect aggregate frame drops at lower rates and consecutive frame drops at higher rates. Because at a higher rate a large number of consecutive frames are dropped, the ones that are played appear in a more timely manner. As a solution to the observed problems, we present some QoS based approaches to control drop and delay parameters View full abstract»

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  • Content development for the Internet as a mass medium

    Publication Year: 1998 , Page(s): 2 - 9
    Cited by:  Papers (1)
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    The Internet is about to become the fourth mass medium, besides press, radio, and TV. Personalized news and video-on-demand are just the initial content types: like the other media, the Internet will bring forth more specific new content types. This article identifies important characteristics of these future content types. It shows that content creation for the new medium involves software engineering to a large extent; requirements for its support are derived. The claimed characteristics and requirements are backed with experiences from experimental development of new contents, software engineering aids, and exploration tools for the new mass medium View full abstract»

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  • Distributed real-time multimedia object modeling

    Publication Year: 1998 , Page(s): 44 - 50
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    This paper describes a multimedia data processing model that supports a wide variety of applications based on a multimedia production model. This model is designed to realize network-transparent access to stored multimedia data, real-time multimedia input devices, and multimedia processing. The model addresses real-time data switching and delivery, as well as acquisition, processing, and output, and it also integrates translation, compression and synchronization services. The model consists of three layers, such as: stream layer, multimedia presentation layer, and hyper-presentation layer. The paper describes the data abstractions associated with each layer, and describes the object-oriented mechanisms that provide these services in a very efficient and modular way. The client server architecture and implementation issues, and future directions are also discussed View full abstract»

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  • A distributed multimedia conferencing system for distance learning

    Publication Year: 1998 , Page(s): 88 - 95
    Cited by:  Papers (1)  |  Patents (1)
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    This paper presents a platform-independent multimedia distance education system, called GVA (Global Virtual Academy). The GVA system provides a distance lecture environment supported by multi-use interactive tools such as real-time full-duplex voice talking, text chatting, and a shared whiteboard on top of a web browser. For organizing and coordinating several concurrent lecture sections session and conference management schemes are employed. In addition, this system offers a self-study environment in which students access lecture notes on the web and review previous lectures on demand. For the on-demand lecture review service, multimedia data of real-time lectures are stored on the database of the GVA system and replayed later on demand with intermedia synchronization. This system is implemented in Java language and thus portable to any machines with Java Virtual Machine. Currently, this system is accessible by the registered through various network environments including LAN, ISDN, PSTN and Internet. This remote lecture system can provide a good environment to educate students via multimedia interactive communication and bring remote users within easy distance View full abstract»

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  • Developing personalized information services on the internet

    Publication Year: 1998 , Page(s): 86
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    First Page of the Article
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  • Engineering multimedia user interfaces with objects and patterns

    Publication Year: 1998 , Page(s): 51 - 58
    Cited by:  Papers (1)
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    We discuss the use of an object-oriented design model to describe multimedia user interfaces. Our approach is complemented with a set of design patterns aimed at capturing recurrent interface design problems together with good solutions to those problems. We first introduce the problem of designing usable multimedia interfaces, we then present the Object-Oriented Hypermedia Design Method to contextualize our work. We discuss in depth the ADV object model and its feasibility for describing static and dynamic aspects of multimedia user interfaces. We finally introduce design patterns and present some simple patterns together with real examples taken from well-known multimedia applications, including Web applications. Some further work is also discussed View full abstract»

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  • Structured Graph Viewer: a scalable hypermedia browsing tool

    Publication Year: 1998 , Page(s): 104 - 110
    Cited by:  Papers (2)
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    When browsing a large hypermedia collection, users open struggle to maintain context. An overview facility which works together with standard browsers is needed. The Structured Graph Viewer is part of a system designed to do this. The system supports organising a collection as a structured graph, which can then be explored with the viewer. Structured graphs is a visual formalism originally created to assist the design of scalable graph based CASE tools. A structured graph includes: a graph, a hierarchy and a rule for graph summarisation which uses the hierarchy. The viewer offers improved navigation by letting users find nodes with a combination of: direct hyperlinks, summary hyperlinks, hierarchy based and text based search View full abstract»

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  • A synchronization model for multimedia presentation with critical overlap avoidance

    Publication Year: 1998 , Page(s): 36 - 43
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    This paper presents an object-oriented model to handle the temporal relationship of multimedia objects at the presentation platform. Synchronization of the composite media objects is achieved by ensuring that all of the media objects to be presented in the upcoming “manageable” period must be ready for execution. We define the manageable presentation interval and introduce the concept of presentation groups. According to the above-mentioned concept, we propose a new model called GCOCPN and an algorithm to implement this temporal synchronization scheme by scanning the time-line based temporal specifications and converting to our proposed synchronization model View full abstract»

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  • Creation of new communications based on multimedia technologies

    Publication Year: 1998 , Page(s): 78 - 85
    Cited by:  Papers (1)
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    Various new types of telecommunications services are expected to emerge based on multimedia technologies. In this paper, the concept of hyper-communications is proposed which merges human communications in cyberspace accommodating various people from different places, times zones, and cultures, with computer-generated human-like agent communications. Technologies necessary for bringing about this new telecommunications concept are described along with several research examples at ATR Media Integration and Communications Research Laboratories View full abstract»

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  • Virtual multimedia objects as the platform of customizing multimedia data

    Publication Year: 1998 , Page(s): 18 - 25
    Cited by:  Papers (1)
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    Customizing multimedia data as well as referring its portion is required in multimedia applications. This paper proposes a virtual multimedia object (VMO). This is the object virtually created based on objects in multimedia data. Users can derive portions of multimedia data, append specific data to them, create a new object based on them, and convert their data formats through VMOs. This paper tries to formally describe VMOs. Moreover, a pointing entry is introduced to implement the system based on the concept of VMOs. A pointing entry represents the mappings between a VMO and its original data. Pointing entries are created through user-defined deriving procedures. VMOs are derived through user-defined mapping functions by using the original data and pointing entries. A prototype system using pointing entries has been constructed. Applying it to a multimedia application clarifies that users can manipulate VMOs by writing only a few lines of code, and the mechanism of VMOs gives us a programming guideline View full abstract»

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  • Audio-visual software requirements specification

    Publication Year: 1998 , Page(s): 26 - 33
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    The author proposes an audio-visual software requirements definition method including an audio-visual software requirements specification (AVSRS) with an audio-visual requirements language and executing SRSs. The method proposed provides a describer for defining both the shape and semantics of icons to specify the requirements. The method also provides for describing icon movements as a scenario description and for specifying sounds in the icon movements. This scenario enables an execution of the SRS with animation. The describer can confirm his requirements by checking the animation. Furthermore, the author describes a supporting method of visual software requirements definition by multiple developers via a network system. A visual requirements language named VRDL and tools are illustrated with examples. The audio-visual requirements specification method improves the understandability of an SRS, the ease of writing the SRS and the correctness of the SRS. This method also supports a co-operative software requirements definition View full abstract»

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  • An EFSM-based formal model for providing VCR-like functions in multimedia systems

    Publication Year: 1998 , Page(s): 10 - 17
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    We propose a Dynamic Extended Finite State Machine (DEFSM) to achieve software modeling of interactive multimedia presentations. Using the DEFSM-based approach, each medium's behavior, i.e., intra-medium synchronization, is specified in an Actor DEFSM; inter-media's relationship, i.e., intermedia synchronization, is specified in a Synchronizer DEFSM. In order to re-synchronize media displaying when presentations are resumed, some control schemes are adopted during the processing of each user interaction View full abstract»

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